A system for routing optical signals includes a waveguide array and a cylindrical resonator lying across the waveguide array, the cylindrical resonator having independently controllable tangential interfaces with each of the waveguides within the waveguide array. The bipolar transistor includes an emitter 36, a base 32, and a collector structure. In one embodiment, the parameter is the amount of time of programming or writing a predetermined data state into a memory cell. When the test is concluded, the ATS is instructed to return the status to normal so that power delivery is resumed from the main power source.